Glass water bottle Straw cup 400ml

▸ Material structure: high borosilicate glass body | Food Grade Silicone Sealing Ring
▸ Capacity specification: 400ml±5% tolerance range
▸ Fitting composition: cup body×1 | Straw Assembly×1 | Anti-scald cup sleeve×1
▸ Mouth design: straw + direct drink dual-mode switching structure
▸ Sealing performance: pass the temperature difference test from -20°C to 100°C